K Indices of Magnetic Activity Relative to an assumed Quiet-day for each 3-Hour Period
The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives the K indices on a current basis from approximately 85 observatories. The K index is a quasi-logarithmic local index of the 3-hourly range in magnetic activity relative to an assumed quiet-day curve for the recording site. First introduced by J. Bartels in 1938, it consists of a single digit 0 through 9 for each 3-hourly interval. The K indices are received on a monthly basis from the various observatories and are
available from 1938 to present. The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) also receives KP indices from the Institute for Geophysik in Gottingen, Germany on a monthly basis. The KP index is a planetary index based on the K index from 12 or 13 selected stations and has been derived routinely from 1932.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
"@type": "vcard:Contact",
"hasEmail": "mailto:justin.mabie@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives the K indices on a current basis from approximately 85 observatories. The K index is a quasi-logarithmic local index of the 3-hourly range in magnetic activity relative to an assumed quiet-day curve for the recording site. First introduced by J. Bartels in 1938, it consists of a single digit 0 through 9 for each 3-hourly interval. The K indices are received on a monthly basis from the various observatories and are available from 1938 to present. The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) also receives KP indices from the Institute for Geophysik in Gottingen, Germany on a monthly basis. The KP index is a planetary index based on the K index from 12 or 13 selected stations and has been derived routinely from 1932. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "K Indices",
"mediaType": "placeholder/value",
"description": "FTP site of K Indices for download",
"downloadURL": "ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/RELATED_INDICES/K_INDICES",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Global Change Master Directory (GCMD) Keywords",
"mediaType": "placeholder/value",
"description": "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.",
"downloadURL": "https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Geomagnetic kp and ap Indices",
"accessURL": "https://www.ngdc.noaa.gov/stp/geomag/kp_ap.html",
"description": "Home page for magnetic K, Kp, and ap indices",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.ngdc.stp.indices:G00590 |
| issued | 1957-01-01T00:00:00.000+00:00 |
| keyword |
[
"EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices",
"Earth Science > Interior & Crust",
"Geomagnetism",
"Earth Science > Land",
"ICSU-WDS > International Council for Science - World Data System",
"Global",
"DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
"DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce"
]
|
| landingPage | https://www.ngdc.noaa.gov/stp/geomag/kp_ap.html |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 1957-01-01T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| rights | otherRestrictions |
| spatial | 180.0,-90.0,-180.0,90.0 |
| temporal | 1938-01-01T00:00:00+00:00/1938-01-01T00:00:00+00:00 |
| title | K Indices of Magnetic Activity Relative to an assumed Quiet-day for each 3-Hour Period |
